AsiaWorld-Expo is worth a visit, located 1.6 mi (2.6 km) from central Chek Lap Kok. It's also full of great shops and restaurants, so you can spend the afternoon having a wander.
If you like shopping, take time out to go to Citygate Outlets when in Tung Chung. It's also full of great shops and restaurants, so you can spend the afternoon having a wander.
You can take time to visit Ngong Ping Cable Car Tung Chung Station during your travels to Tung Chung. Check out the shops and top-notch restaurants in this family-friendly area.